Oral Rehabilitation of A Case of Amelogenesis Imperfecta.

Amelogenesis imperfecta has been described as a group of hereditary enamel defects not associated with systemic diseases. Restoration of these defects is important not only because of aesthetic and functional concern, but also because there may be a positive psychological impact for the patient. Among various treatments described for rehabilitation of Amelogenesis imperfecta, this case report described the rehabilitation of patient with Amelogenesis imperfecta utilizing twin stage procedure with aim of improving patient’s function, appearance, restoring the proper contacts and simplifying the prosthetic clinical and lab work procedures. Twin stage procedure is based on the fact that described to prevent horizontal forces acting during various mandibular excursion in full mouth rehabilitation case, to control horizontal forces concept of disocclusion was given which in turn depends upon the condylar path, incisal path, cusp angle. Among them cusp angle role is more supported whereas condylar path and incisal path role is considered unreliable.

Zirconium for esthetic rehabilitation: An overview.

The demand for esthetic restorations has resulted in an increased use of dental ceramics for anterior and posterior restorations. A few decades ago, all-ceramic restorations were restricted to treatment in the anterior region, but now all-ceramic restorations can be made anywhere in the dentition. The properties of traditional ceramic materials, however, have limited their use to single crowns; larger restorations have been inadvisable because of insufficient strength. In attempts to meet the requirements for dental materials and improve strength and toughness, several new ceramic materials and techniques have been developed during the past few decades The paper reviews the current literature on dental zirconia with respect to survival, properties, marginal fit, cementation, esthetics and suggests clinical recommendations for their use.

A Clinical Study To Evaluate Tooth Contact Patterns And Correlation With Masticatory Efficiency in Dentulous Subjects.

A variety of functional tooth contact patterns exist in population of young adult patients.The purpose of the present study is to find the relationship between different lateral tooth contact patterns and dental morphology and their effect on masticatory efficiency. Forty young dentulous subjects were selected and their impression with irreversible hydrocolloid was made. Polyvinyl silicone bite registration paste was used to record lateral tooth contact patterns in functional range of mandibular movement. Overjet and overbite including mesiodistal relation of tooth recoded with cast secured in the intercuspal position and masticatory efficiency was determined by calorimetric method by using raw carrot. Among all subjects 15% having canine protection, 55% group function, and 30% balance occlusion. There is positive correlation between age and masticatory efficiency [r=+0.656, p<.01] and negative correlation between overjet and masticatory efficiency [r=-0.409, p<0.01]. In the present study Canine protection occlusion had significantly lower mean masticatory efficiency than group function and balanced occlusion group. This signifies that the masticatory efficiency is dependent on lateral tooth contact patterns.